Comment 7 for bug 1817312

You images appear to support what I described. It looks like Eagle uses the line thickness to created the inside edge for the zone filling where KiCad doesn't use any zone line thickness. This means that we are off by 1/2 the zone line thickness when importing Eagle boards. That being said, no one else has filed a bug report on this so I am suspicious that there may be an option setting in Eagle that defines if the zone fill uses the line segment width or not so we should proceed with caution here.